Democrat leaders tried in vain to prevent amendments to the omnibus. But it was ultimately three of their own — Sens. Evan Bayh (D-IN), Russ Feingold (D-WI) and Claire McCaskill (D-MO) — who put Reid in the awkward position of canceling tomorrow’s vote.

Sen. John Ensign (R-NV) has introduced an amendment, set to be debated and voted on Monday evening, to strike the killer language. Early today, Ensign joined other Republicans and D.C. scholarship recipients to voice support for the scholarships: